Sorry, I thought this was a given. Let me justify. Before the Universe, God must have existed. So we can deduce God was at least not always within in the Universe. Assuming the Omnipotence, Omniscience and Omnipresence of God, he could not operate within the laws of science (he would be breaking the conservation of mass, energy and information laws). Therefore, the only reasonable way of excepting both Science and God is that God created the Universe from outside of it and 'looks in' so to speak.